Phonograph stylus and sound box



March 11, 1930. PASCHE I 1,750,351

PHONOGRAPH STYLUS AND SOUND BOX Filed July 6, 1928 2 Sheets-Sheet 1 INVENTOR WITNESSES Y J 52 ll 7 i/fig/w w. jy j 45.29 I ATTORNEY March 11, 1930. A. E. PASCHE I PHONOGRAPH STYLUS AND SOUND BOX 2 Sheets-Sheet 2 Filed July 6. 1928 than n? WP INVENTOR li'jascfie 35 M as; v

- ATTORNEY WITNESSES 5,4069

Patented Mar. 11, 1930 nueus'rn a rascnn', or NEW YORK, N. Yr

rnonoennrn srnus AND scum) :eox

- Application filed July a, 1928. Serial m5. 290,824.

The invention relatesto a sound box and stylus for phonographs.

\ One of the objects of the invention is to provide a sound box stylus assembly wherein a plurality of stylus points may be associated with the sound box for consecutive use in combination with the sound groove of a'phonoiraphic record.

further object of the invention is to provide means carried by the sound box whereby any one of a plurality of styli carried thereby may be positioned for playing.

A further object of the invention is to provide a stylus-carrying tape or belt adapted to be associated with a sound box and movable with respect thereto to bring into playing position any one of the styli carried thereby.

A further object of the invention is to provide in a sound box, ready means for detaching a stylus-carrying belt and replacing the same.

Other objects and features of the invention will be apparent by referrin to the specification and the drawings, in w ich- Fig. 1 is a rear plan view of one form of.

my present invention.

Fig. 2 is a detail view of the tape adjusting mechanism in adjusting position.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 1. v

Fig. 4 is a front plan view of the invention.

Fig. 5 is a top plan view of the same mechg anism.

Figs. 6 and 7 are detail views of two forms of the stylus-carrying tape forming part of the present invention. a

Fig. 8 is a sectional detail taken on the lines 8-8of Fig. 4.

Referring more particularly to the drawings, there is provided a sound box comprising a centrally-apertured diaphragm-carrying body 1, positioned within which is a sound propagating diaphragm 2. Communicating with the diaphragm there is provided a coupling member 3 adapted'to engage the usual tone arm of a phonograph. It will be understood that these portions of the invention as illustrated form no part of the present invention, and that it is not intended that the scope of the'invention islimited to the spe-. cific construction herein disclosed.

The body 1 of the sound bo'x preferably extends beyond the circumference of the diaphragm 2, and is preferably apertured as at 4 to reduce wei' ht, and consequently'the cost of the device. he outer circumference of the body 1 is adapted to receive a stylus-carrying band 5, two forms of which are shown in detail in Figs. 6 and 7, and will be hereinafter described. Referring to Fig. 8, number 6 indicates a groove in the peripheral edge of the body 1 for the band 5 which is receivable therein and movable therethrough. For imparting motion to the diaphragm 2 inresponse to the sound groove of a phonograph record, the body 1 is provided with a pair of downwardly'extending ears 7 apertured to i receive threadedly adjustable pivot members 8. Mounted between the pivot members 8, a diaphragm actuating member. 9 is provided which is connected preferably to the center of the diaphragm 2 by a driving arm 10. Member 9 is preferably cut away as at 11 to reduce the weight and consequentially the inertia of the diaphragm actuating assembly. The outer periphery of the member 9 is grooved similarly to the periphery of the body 1, and is adapted to receive a stylus-carrying band 5. A guiding plate 12 is formed integral with the member 9, and is adapted to uide by bearing against the outer surface of the band 5; thus insuring the required tensioning and positioning of the styli and the band 5. It may be readily seen that when any one of the styli of the band 5, such as 14, is positioned at the extremity of the member 9 in direct alignment with the actuating arm 10, that vibrations imparted from the sound groove of a phonographic record will be imparted to the diaphragm through the pivoted connection at 8 and the actuating arm 10.

For moving the band 5 around the periphbifurcated arm 17 pivoted to the sound box as at 18 and provided with an extending end 19 normally held in extended expansion spring 20.

For rotating the member 15, a ratchet wheel 21 is provided, together with a pawl 22 normally held in engagement with the ratchets by a spring member 23. Pawl 22 is pivotally mounted within a carrier member 24 pivoted to the sound box as at 25 and preferably in combination with the pivot 18 of the bifurcated member 17.

In the form of the invention illustrated, the member 17 and the expansion spring 20 are received within a cut-out portion 26 on the front face of the sound box 1. The operating mechanism however, including the cam 22 and carrying member 24 are positioned on the rear face of the sound box 1, and extend therefrom, being in alignment with the latch et wheel 21. The carrying member 24 is operable through a link 27 movable in response to movement of an operating lever 28 pivoted to the sound box as at 29; a contractile spring 30 being provided to normally hold the carrying arm 24 against movement in response to the lever 28. For manipulation of the lever 28, the periphery of the sound box 1 is provided with a finger grip 31 rigidly secured thereto. On the rear of the sound box 1, an indicating pin 32 is provided whereby movement of the lever 28 may be accurately judged.

Referring more particularly to Figs. 6 and 7, the band 5 is preferably provided with a plurality of a ertures 33 which are adapted to be engaged y projections 34 on the rotary member 15. It is within the scope of the present invention to provide styli of any de position by the sired character formed integral with or secured to the bands 5 in any desired manner. Two methods of forming the styli integrally with the bands 6 are disclosed in Flgs. 6 and 7.

In Fig. 6, projecting points 34 are provided on the band 5 and tu ned at right angles thereto, whereby when the band is in position on the circumference of the sound box, the points 34 will project radially from the sound box and may be used as styli; suitable machining or forming of the points 34 being understood. In Fig. 7 the styli are formed by the provision of a plurality of tangential slots cut in one edge of the band 5. The points 36 thus formed are bent at right angles to the band 5, but in a plane at right angles to the plane in which the points 34 illustrated in Fig. 6 lie. It may be readily seen that the points 36 thus form radial extending styli of the band 5.

In operation of the device, when it is desired to change the stylus or point 14 of the band 5, which is in line with the operating arm 10, the lever 28 is moved downwardly about its pivot 29, thus moving the carrying arm 24 about its pivot 25 and against the tension of spring 30; the pawl 22 engaging one ,just described having ta of the teeth of the ratchet 21, and moving the ratchet wheel 21, rotatable member 15, and pivot operating member 17 downwardly against the tension of spring 20, and thus releasing the normal tension applied to the band 5 through the action of the spring 20.

It may be readily seen that as the rotary member 15 moves downwardly, relieving the tension on the band 5, the band 5 is free to move within the groove 6 about the periphery of the sound box 1 under the influence of the rotary member 15. When the band 5 is thus free to move, the pawl 22 engaging the ratchet 21 rotates the same about in the pivoted member 17.

The proportionate movement of the lever 28 to bring the next adjacent styli 14 in operative position in alignment with the operating arm 10, may be determined by the indicating member 32. lVhen the lower edge of the lever 28 is adjacent the center of the indicator 32, as shown in Fig. 2, it will serve to notify the operator that the next adjacent styli of the band 5 is in operative position. The lever 28 may then be allowed to assume its normal its axis j ournalled position; this being accomplished by contraction of the spring 30, movement of the earrying member 24, and link 27. This results in an upward movement of the pawl 22 over the next adjacent ratchet of the wheel 21 to that which it had previously engaged for moving the band 5. The sound box is then ready for continued playing; the operation space of time without removal of the sound box from its playing position over the record.

It may thus be seen that the device does not require the removal of an old, or insertion of a new stylus, which is accompanied by the tedious adjusting of the stylus-holding screw, as is required in the operation of the present day sound boxes. When all the styli of the band 5have been sufiiciently played, and when it is desired to remove the band and replace a new one, the lever 28 is again depressed. The lowering of the pivoted member 17, turning of the ratchet 22, and movement of the band 5, all take place as previously described. In this instance however, lever 28 is moved further downwardly as indicated by the dotted lines in Fi 1. Due to the slanting face cut ofthe rate et 21, further movement of lever 28 below the indicator 32 causes a continued movement of the pivot member 17 about its pivot 18 and against the tension of spring 20, rather than a continued rotation of the ratchet 21. In fact, the movement of the pivot member 17 downwardly by movement of the lever 28 below the indicator 32, is such as to remove the projections 34 of the rotary member 15 from the apertures 33 and the band 5.

The band may then be readily removed from the groove on the periphery of the sound box, and fromthe periphery of the en place in a short.

pivoted ortion 9 andthe guide plate While 't us holding the lever 28, causin the rotary member 15 to be depresse a new band may be readil inserted under the of the rotary member 15. When this is accoinplished, lever 28 is allowed to assume its normal position as shown in full lines in Fig. 1, the projections 34 of the rotary member 15 being so aligned .as to cause'the band 5 to move to brin one of its styli 14 in proper alignment wit the actuating arm 10.,

Thus, it may be seenthat the invention provides for a plurality of styli carried on removable bands, and means for causing their ready adjustment in consecutive order into operative position onthe sound box, and means for readily removing and replacin Eew bands in combination with the soun It is to be understood that the specific form and construction of the invention as herein described and illustrated forms only one embodiment of the present invention, and consequently variations of the invention may be. resorted to without departing from the spirit or see e of the appended claims.

1. In a device of the character described, the combination with a sound box of a band a plurality of styli carried b said band, means for moving said band with respect to said box, said means being operable to retain saidband on said box, and said means being 1 adapted to partially release the tension on said band when moving said band.

2. In a device of the character described,

the combination with a sound box, of aband, 9

a plurality of styli carried by said band,

- means for moving said band with respect to means for tenslomngmsaid said box, said means bein o erable to retain said band on said box, said and being movable to release the tension on said band for moving said band, and said means being further operable to further release said band when. removal of said bandis desired. '3. Ina device ofthe character described, the combination with a soundbox having a receivable 1n and movable throug groove in the periphery of said box, and

groove, said means operative to control the movement of sai hand through said In a device of the'character described, the combination with a' sound "box, an apertured sound x, a pivoted rotatable member adapted to ,cngage said apertures on said Ins-carrying band receivable. on said July, 1928.

- AUGUS'lE E. PASQHE.

118 peripheral groove of astylus-carrymg Sal .bandwithin said I 1 band, and means for normall holding said rotatable memberagamst sai band in tensioning position. v v 

